XP stopped booting

Hello

I'm not sure if I should post this in the XP discussion board or the HDD discussion board - so I will post it in both (sorry )

Yesterday I came home from a 12 day vacation. When I booted my computer, everything seemed to be working fine. Then several hours later I got a FasTrak error (FasTrak is a RAID monitoring utility). I have gotten these error messages before and restarting my computer fixed all of them. But when I went to restart my computer, it went to the windows xp loading screen (with the 3 little blue squares that go up) it just sat there. The little blue boxes kept moving, but nothing happened. It was getting late so I decided to turn off my computer (hard power) and fix it in the morning.

The same thing happened to me the today. I suspected that one of the hard drives was not getting power or the IDE connector cables were not in place correctly, but I checked these and they seemed to be connected properly. So I took an old harddrive of mine and installed XP on it to see what I could do. XP loaded fine from the harddrive and I could see and access files from my old harddrives. Just to see what would happen, I tried running my original (my "broken" ) XP version. This time, it kept on staying at that windows loading screen, but after 5-10 minutes it rebooted my computer and asked me if I wanted to boot in safe mode. Curious, I selected "safe mode with networking" and my computer booted just fine. Everything was a bit slow (but that usually happens in safemode) but besides that it seemed basically ok. Then I tried running a few programs and got an error and it asked me to report to microsoft. When I clicked on "show me more" or whatever, they all had an error with "jscript.dll." So I went to my new installation of XP, got all the critical updates (there was no jscript.dll at www.dll-files.com) and put it on to my old "broken" version of XP. I went back to my old ver of xp and decided to try system restore. However, there was no "calender" with any "bolded days." Then I got an error that said "unknown hard error" (I assume that this is some sort of version of the fastrak error I got the day before. but since i was in safe mode fastrak was not running). I rebooted my computer in safemode again and tried to run programs such as internet explorer and system restore. However, when I tried to run them, they froze. I could still move my mouse, and when I would click on things like the start menu they would open, but nothing seemed to work. The same thing happened a few more times with a few more reboots.

Can someone help me here? I don't know what to do and I have no idea what my problem is. I would like to get back to my old working version of XP.

For reference, here are my comps specs
P4 2.4ghz B (533 mhz fsb)
512 mb samsung ddr 333
Gigabyte GA-845PE Ultra mobo w/ promise raid lite
2x 80gb western digital caviar drives w/ 8mb cache in RAID 0 config on the onboard RAID driver w/ old broken install of XP
1x maxtor 20gb harddrive with working install of XP (installed today)
Radeon 9700 pro gfx card
SB audigy gamer sound card
Floppy drive Yamaha CRW-F1 cd burner (48x24x48x)
16x48x dvd/cd drive (reader)
430w antec TruePower powersupply
Addendum: I forgot to add, two of the computers on my network have been infected with the w32.blaster.worm virus if that makes any difference. However, I couldnt find any traces of the worm on my computer.

Thanks for your help